Straightway valve



UNTTED STATES 4 FREDERICK lV. OBRIEN,

STRAIGHTWAY VALVE'. 7

PATENT y "Ustica,

or DETROIT, MICHIGAN.'

'SPECIFICATION forming part of Letters Patent No. 575,848, dated JanuaryQ6, 1897.

Application filed March 30, 1896.

/'o @ZZ whom it may concern:

Be it known that I, FREDERICK W. (YEMEN,- a citizen of the UnitedStates, residing at Detroit, county ofV Wayne, State of Michigan, haveinvented a certain new and useful Improvement in Straightway Valves; andI declare the following to be a full, clear, and ex- To these ends myinvention consists of the construction, combination, and arrangement ofdevices hereinafter described and claimed,

and illustrated in the accompanying drawings, in which- Figure lis avertical crosssection; and Fig. 2 is a verti longitudinal-section on theline 2 2,' Figy MI carnyout my invention as followsz` A representsthevalve-case, formed with interiorvalve-seatm-ls at o, a.

A is the cap, :having a threaded connection with thec'ase, as indicatedat A2.

As indicates a packing-nut of a s'tuiiug-box or packing-gland.

B and B' denote valvedisks or plates, constructed to seat on thevalve-seats c d "when -said disks are in closed position. These valvevdisks or plates B B' are each recessed toward their upper'edges to forma chamber b. Said plates are also recessed toward their lower edges toform an additional chainberb'.

C represents the valve-stem, constructed with a conical-shaped portionC" to engage the valve-plates within the chamber b. The lower end of thevalve-stem is threaded, as indicated at C2, to engage a rectangular nutCEl withinl the chamber o', said chamber constructed to correspondinform to the shape o' said nutV and to hold the nut from turning. Thevalveserial No; 585,322. (No modelo' stem is preferably cut away justabove the conicalpo'rtion C,"as indicated at L@,iorlning platestoanydesiredpostion and quickly lock said plates at any'poiit, as may bedesired; It will -be perceived that by tightening up the threadedportion-'Cilothestern in the nut C3 the eonicalfsha'ped" portion C iscaused to plates and lock them'against the adjacent portions of thevalve-case; By loosening the valve-stem in engagement with said nut thevalve-plates are loosened in relation to the conical-shaped portion C',so that thev valvestem may be adjusted'L in or out readily and quicklythrough the cap A'pto move the valvedisks toward or from a closedposition to entirelyclose Vthe passage-way' through the valve-case or toopen the passage-way therethrough in any desired degree, more or less,as may be desired, simply by reciprocating the valve-stern through thecase A by a straight pull or opposite movement and then slightly turningthe handle vQ4 of thevalve-stem to tighten the stem in the nut C3,thereby locking the plates in any given position. Ob viously thispermits the quick adjustment of the valve-plates and the quick lockingof the same atany desired point of' adjustment.

'The two seats of .the valve-chamber A4 are vertically parallel or intwo vertically-parallel planes, and above the valve-seat the walls ofsaid chamber are formed with a rib A5 of suit-` able'width, so that saidwalls shall be maintained parallel, and whereby the valve-plates willmove freely from the bottom to the top of thechamber, and whereby saidplates may 'be locked against said ribs in any desired position.

To indicate aty whatvposltipnthe valveplates are adjusted, I'yprovide'aA gage of any Isuitable construction', as,v for example, an armD, engaged @Ontharen A'fthe arm Dfbeng 6 5 we'dg'e against thevalve-.plates to spread'said preferably formed with a vcollar d, havinga threaded connection upon said cap. This arm isformed with a loop,(indicated at D.)

Upon the valve-stem is engaged an indicator-arm E, which may be.provided with a scale, as shown, the arm E working freely through theloop D and thereby indicating any given position of the valve-plates.

By dispensing with any threaded engagement of the valve-stem Within thecap and simply :forming/.the valvestem With a threaded engagement withthe nut C3 the construction is greatly simplified, as Well as renderedmore efficient, permitting the quick opening and closing of the valve.

The nut C3, it will be understood, is iin-vl movablefin 'the chamber b',intermediate the valve-disks. In Fig. 2 the valve-disks are shown inunseated condition, the conical por# tion C being indicated as looseWithin *the chamber b. By tightening up the valve-stem in the nut C3 byturning the stem inthe proper direction it will be apparent that theconical-shaped portion C' will be drawn down, so as to wedge apart thevalve-disks. as indicated .in dotted'lines, Fig. 2, forein g thevalvedisks upon their adjacent seats. A corrcsponding action will lookthe valve-disks in any given position of adjustment. It takes but aslight movement of the handle C4 in the 'proper direction either toloosen or tighten the conical-shaped portion C within the chamber l),rendering the adjustment of the quick and easy of accomplish ment.

lt is evident that the shoulders b2 will limit the movement of theconical-shaped portion C in the chamber l), thereby preventing the steinC being disengaged from the nut C3 while in engagement with thevalve-disks.

That l claim as my invention isvl. In combination, the valve case, thevalve-plates formed with an intermediate chamber b, and an intermediatechamberb, a valve-stem formed with a conical-shaped portion Clocated inthe chamber/b, a'nut located inthe chamber b', having a threadedengagement with the lower extremity of the valvestem, and means to holdthe nut from rotating relatively to the valve-plates, said plates' engageable with the inclined sides of the cone on the stem, substantiallyas and for the purpose described.

2. In a valve,the combination of the case '.for'med Witha valvechamber,having vert-ically-parallel valve-seats, a cap, valve-plates formed withan intermediate chamber b, and an intermediate chamber b', a valve-stemreciprooatory through the cap of the valve-case formed lWithnconicalshapedportion C 1ocated in the chamber b, and a nut located inthe chamber b', having -afthreaded engagement with the Valve-stem, andlmeans to hold v the nut from rotating relatively to the valveplates,said plates engageable With the inclined sides of the cone on the stem,substantially as and for the purpose described.

A valve having in combination, a case, valve-plates, a nut held in placebetween the valve plates, and a valve stem having a threaded engagementwith the nut, said valvestem formed with a conical-shaped portion C'located intermediate the valve-plates, whereby the valve-plates may bequickly adjusted and lock-ed in any desired position, said platesengageable with the inciined sides of the cone on the stem,substantially as and for the purpose described.

4:. A valve having in combination, a case,

the valve-plates, the nut held in place be "tween the valve-plates, astem reciprocatory through the cap of the valve-case, and having athreaded connection with said nut, said stem formedwith a conical-shapedportion O,

located between said valve-plates whereby the valve-plates may bcadjusted and locked in any given position, a gage to indicate theposition ofthe valve-plates, and means to holdl the nut fromrotatingrelatively to the valve-plates, said plates engageable with the inclinedsides of the cone on the-stem, substantially as and for the purposedescribed.

5. A valve having `in combination acase,

valve-plates, a nut held in place between the valve plates, and a valve-stem having a threaded engagement with the nut, said valvestem formedWith a conical-shaped portion G' located intermediate the valve-plates;said plates formed with shoulders projecting over the 'upper edge of theconical-shaped portion C', whereby the valve-plates'may be quicklyadjusted and locked in any desired position,

and whereby the valve-stem will be held in engagement with the nut Whilethe valve'- plates are in position Within the case, said platesengageable withthe inclined sides of the cone on the stem, substantiallyas set forth. v

6. A valve having in combination a case, provided withvertically-parallel valve-seats, and with vertically`-parallel ribsAabove the valve-seats, valve-plates, a nut held in place between thevalve-plates, and a valve-stem having a threaded engagement with thenut, said Valve-stein formed with a conical-shaped portion G' locatedintermediate the valveplates, whereby Vthe valve-plates may be quicklyadjusted and locked'in any desired position, said plates engageable withthe iu- `clined sides of the cone on the stem, substantially as setforth.

In testimony whereof I sign this speciiication lin the presence of twowitnesses.

FREDERICK W. OBRULN Witnesses:

N. S. WRIGHT, JOHN F. MILLER.

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